Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsMechanical Properties of Fluids1 Mark
Question
What is gauge pressure?
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Answer
The difference between absolute pressure and atmospheric pressure is known as gauge pressure. As, $\text{P}_{\text{absolute}}=\text{P}_\text{a}+\rho\text{gh}$ So, $\text{P}_{\text{absolute}}\ -\text{P}_\text{a}=\rho\text{gh}$ i.e. $\text{P}_\text{gauge}=\rho\text{gh}$ Here, $\rho$ is the density of a fluid of depth h.
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